/*
// Licensed to Julian Hyde under one or more contributor license
// agreements. See the NOTICE file distributed with this work for
// additional information regarding copyright ownership.
//
// Julian Hyde licenses this file to you under the Apache License,
// Version 2.0 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
 */
package org.olap4j.impl;

import org.olap4j.metadata.NamedList;

import java.util.*;

/**
 * Map backed by a {@link org.olap4j.metadata.NamedList}.
 * 
 * @author jhyde
 */
class NamedListMap<T> extends AbstractMap<String, T> {
	private final NamedList<T> namedList;

	/**
	 * Creates a NamedListMap.
	 * 
	 * @param namedList
	 *            Named list
	 */
	public NamedListMap(NamedList<T> namedList) {
		this.namedList = namedList;
	}

	public Set<Entry<String, T>> entrySet() {
		return new AbstractSet<Entry<String, T>>() {
			public Iterator<Entry<String, T>> iterator() {
				final Iterator<T> iterator = namedList.iterator();
				return new Iterator<Entry<String, T>>() {
					public boolean hasNext() {
						return iterator.hasNext();
					}

					public Entry<String, T> next() {
						T x = iterator.next();
						String name = namedList.getName(x);
						return new Pair<String, T>(name, x);
					}

					public void remove() {
						iterator.remove();
					}
				};
			}

			public int size() {
				return namedList.size();
			}
		};
	}
}

// End NamedListMap.java
